I don't know what to think exactly. As I said earlier, I would have to do a lot more research to give an informed opinion. I don't think anyone should be "fed" hormone blockers without any due process, least of all children. But then again I don't agree with your framing of the question.
Reading through the guidelines of JCEM (Journal of Clinical Endocrinology and Metabolism) it states the following:
"Hormone treatment is not recommended for prepubertal gender-dysphoric/gender-incongruent persons. Those clinicians who recommend gender-affirming endocrine treatments—appropriately trained diagnosing clinicians (required), a mental health provider for adolescents (required) and mental health professional for adults (recommended)—should be knowledgeable about the diagnostic criteria and criteria for gender-affirming treatment, have sufficient training and experience in assessing psychopathology, and be willing to participate in the ongoing care throughout the endocrine transition. We recommend treating gender-dysphoric/gender-incongruent adolescents who have entered puberty at Tanner Stage G2/B2 by suppression with gonadotropin-releasing hormone agonists. Clinicians may add gender-affirming hormones after a multidisciplinary team has confirmed the persistence of gender dysphoria/gender incongruence and sufficient mental capacity to give informed consent to this partially irreversible treatment. Most adolescents have this capacity by age 16 years old. We recognize that there may be compelling reasons to initiate sex hormone treatment prior to age 16 years, although there is minimal published experience treating prior to 13.5 to 14 years of age."
https://academic.oup.com/jcem/article/102/11/3869/4157558
I think that's a somewhat reasonable way to go about if,
IF it should be done in the first place. A multidisciplinary team of endocrinologists, psychologists and other medical staff has making an informed decision with proper diagnosis, and with the consent of the family and individual. At 14 to 16 years old as the lower limit.
Even with that, I don't know exactly where I stand on the issue.